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Jan Koum

Ukrainian-born American entrepreneur, co-founder of WhatsApp
Person human Q15737800

Facts

24 properties
Instance of
human
Sex or gender
male[9]
Date of birth
February 24, 1976
Place of birth
Kyiv
Country of citizenship
United States, Ukraine[6][7]
Occupation
engineer, computer scientist, programmer
Employer
Yahoo (1999–2009)
Educated at
San Jose State University[8]
Birth date
1976-02-24
Citizenship
United States, Ukraine
Languages spoken, written or signed
Ukrainian[13]
Birth place
Kyiv
Facebook
jan.koum
Family name
Koum[11]
Given name
Jan[12]
Instagram
jkoum
Name in native language
Ян Кум[14]
Net worth
16,100,000,000 USD
On focus list of Wikimedia project
WikiProject Ukraine
Residence
United States[10]
Social media followers
61k (56k–62k, n=4)
Start of work period
2009
Twitter
jankoum
Viaf id
65144648379197154889
🏷️ Also known as
en Jan Koum en Yan Borysovych Kum ar جان كوم es Yan Borysovych Kum fa یان کوم he יאן קום hi जेन कोयुम ja ジャン・コウム ru Кум, Ян Борисович ru Ян Борисович Кум th แจน คุ้ม uk Ян Кум zh 揚·庫姆 zh-hant 揚·鮑里索維奇·庫姆
🔖 Identifiers · 14
ISNI
0000000457771076
VIAF cluster ID
65144648379197154889
Library of Congress authority ID
n2018001996
Image (Wikimedia Commons)
Jan Koum - Whatsapp - 4 Years from Now (12791847664).jpg ↗
Crunchbase person ID
jan-koum
Facebook username
jan.koum
Freebase ID
/m/0_s59px
Instagram username
jkoum
LittleSis people ID
172868
Munzinger person ID
00000029925
NLP ID
a0000003217362
National Library of Poland MMS ID
9810688262405606
Show all 14 identifiers +2
WorldCat Entities ID
E39PBJqbrHBVVHDyvWRVT7XWXd
X (Twitter) username
jankoum (2009–present)
🔗 Connections
Occupation 4
engineer, programmer, computer scientist, software engineer
Country of citizenship 2
United States, Ukraine
Educated at 1
San Jose State University
Employer 1
Yahoo
Given name 1
Jan
Instance of 1
human
Languages spoken, written or signed 1
Ukrainian
On focus list of Wikimedia project 1
WikiProject Ukraine
Place of birth 1
Kyiv
Residence 1
United States
Sex or gender 1
male
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Summary

Jan Koum's place of birth was Kyiv[1]. He was born on February 24, 1976[2]. He worked as an engineer[3], computer scientist[4], and programmer[5].

FAQs

Where was Jan Koum born?

Jan Koum was born in Kyiv[1].

What did Jan Koum do for work?

Jan Koum worked as engineer[3], computer scientist[4], and programmer[5].

Where did Jan Koum go to school?

Jan Koum was educated at San Jose State University[8].

Related Entities

computer scientist programmer software engineer Ukraine United States

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [1] ↑ . wikidata.org.
  2. [9] ↑ . wikidata.org.
  3. [6] ↑ . wikidata.org.
  4. [7] ↑ . wikidata.org.
  5. [8] ↑ . wikidata.org.
  6. [3] ↑ . wikidata.org.
  7. [4] ↑ . wikidata.org.
  8. [5] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [2] ↑ . Munzinger Personen. Retrieved . wikidata.org.
  11. [11] ↑ . wikidata.org.
  12. [12] ↑ . wikidata.org.
  13. [13] ↑ . wikidata.org.
  14. [14] ↑ . wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Jan Koum. Retrieved October 29, 2026, from https://4ort.xyz/entity/jan-koum
MLA “Jan Koum.” 4ort.xyz Knowledge Graph, 4ort.xyz, 29 Oct. 2026, https://4ort.xyz/entity/jan-koum.
BibTeX @misc{4ortxyz_jan-koum_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Jan Koum}}, year = {2026}, url = {https://4ort.xyz/entity/jan-koum}, note = {Accessed: 2026-10-29}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Jan Koum — https://4ort.xyz/entity/jan-koum (retrieved 2026-10-29)

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